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Stock-Based Compensation (Summary of Status of Performance Share Units Outstanding) (Details) - Performance Shares [Member]
3 Months Ended
Sep. 30, 2020
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Beginning Balance, Non-vested Shares | shares 64,264
Granted, Non-vested Shares | shares 7,854
Vested, Non-vested Shares | shares (7,854)
Forfeited or expired, Non-vested Shares | shares (29,460)
Ending Balance, Non-vested Shares | shares 34,804
Beginning Balance Non-vested, Weighted Average Grant Date Fair Value | $ / shares $ 5.65
Granted, Weighted Average Grant Date Fair Value | $ / shares 4.26
Vested, Weighted Average Grant Date Fair Value | $ / shares 4.26
Forfeited or expired, Weighted Average Grant Date Fair Value | $ / shares 6.17
Ending Balance Non-vested, Weighted Average Grant Date Fair Value | $ / shares $ 5.24